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linux/drivers/tty
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Dustin Lundquist 985961dd26 serial: jsm: fix NPE during jsm_uart_port_init 
commit e3975aa899 upstream.

No device was set which caused serial_base_ctrl_add to crash.

 BUG: kernel NULL pointer dereference, address: 0000000000000050
 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
 CPU: 16 UID: 0 PID: 368 Comm: (udev-worker) Not tainted 6.12.25-amd64 #1  Debian 6.12.25-1
 RIP: 0010:serial_base_ctrl_add+0x96/0x120
 Call Trace:
  <TASK>
  serial_core_register_port+0x1a0/0x580
  ? __setup_irq+0x39c/0x660
  ? __kmalloc_cache_noprof+0x111/0x310
  jsm_uart_port_init+0xe8/0x180 [jsm]
  jsm_probe_one+0x1f4/0x410 [jsm]
  local_pci_probe+0x42/0x90
  pci_device_probe+0x22f/0x270
  really_probe+0xdb/0x340
  ? pm_runtime_barrier+0x54/0x90
  ? __pfx___driver_attach+0x10/0x10
  __driver_probe_device+0x78/0x110
  driver_probe_device+0x1f/0xa0
  __driver_attach+0xba/0x1c0
  bus_for_each_dev+0x8c/0xe0
  bus_add_driver+0x112/0x1f0
  driver_register+0x72/0xd0
  jsm_init_module+0x36/0xff0 [jsm]
  ? __pfx_jsm_init_module+0x10/0x10 [jsm]
  do_one_initcall+0x58/0x310
  do_init_module+0x60/0x230

Tested with Digi Neo PCIe 8 port card.

Fixes: 84a9582fd2 ("serial: core: Start managing serial controllers to enable runtime PM")
Cc: stable <stable@kernel.org>
Signed-off-by: Dustin Lundquist <dustin@null-ptr.net>
Link: https://lore.kernel.org/r/3f31d4f75863614655c4673027a208be78d022ec.camel@null-ptr.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-06-10 07:13:00 -04:00
..
hvc tty: hvc: convert comma to semicolon 2024-09-03 10:47:56 +02:00
ipwireless tty: ipwireless: remove unused ipw_dev::attribute_memory 2023-11-23 19:16:03 +00:00
serdev serdev: Use of_property_present() 2024-08-07 13:08:14 +02:00
serial serial: jsm: fix NPE during jsm_uart_port_init 2025-06-10 07:13:00 -04:00
vt tty: Require CAP_SYS_ADMIN for all usages of TIOCL_SELMOUSEREPORT 2025-05-02 07:59:10 +02:00
amiserial.c tty: add missing MODULE_DESCRIPTION() macros 2024-06-24 16:10:11 +02:00
ehv_bytechan.c tty: ehv_bytechan: convert to u8 and size_t 2023-12-08 12:02:37 +01:00
goldfish.c tty: add missing MODULE_DESCRIPTION() macros 2024-06-24 16:10:11 +02:00
Kconfig vt: remove superfluous CONFIG_HW_CONSOLE 2024-01-27 19:03:51 -08:00
Makefile tty: add rpmsg driver 2021-10-21 12:35:35 +02:00
mips_ejtag_fdc.c tty: mips_ejtag_fdc: fix one more u8 warning 2025-02-08 09:57:59 +01:00
moxa.c tty: moxa: convert to u8 and size_t 2023-12-08 12:02:38 +01:00
mxser.c mxser: convert comma to semicolon 2024-09-03 10:47:47 +02:00
n_gsm.c tty: n_gsm: Fix use-after-free in gsm_cleanup_mux 2024-10-11 08:28:17 +02:00
n_hdlc.c tty: add missing MODULE_DESCRIPTION() macros 2024-06-24 16:10:11 +02:00
n_null.c tty: ldops: unify to u8 2023-08-11 21:12:47 +02:00
n_tty.c tty: n_tty: use uint for space returned by tty_write_room() 2025-04-10 14:39:26 +02:00
nozomi.c tty: nozomi: convert to u8 and size_t 2023-12-08 12:02:38 +01:00
pty.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
rpmsg_tty.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
synclink_gt.c tty: add missing MODULE_DESCRIPTION() macros 2024-06-24 16:10:11 +02:00
sysrq.c Linux 6.11-rc1 2024-07-30 09:30:11 -10:00
tty.h tty: convert THROTTLE constants into enum 2023-10-03 14:31:16 +02:00
tty_audit.c tty: audit: unify to u8 2023-08-11 21:12:46 +02:00
tty_baudrate.c tty: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c tty: Don't include tty_buffer.h in tty.h 2024-02-18 18:59:59 +01:00
tty_io.c tty: ldsic: fix tty_ldisc_autoload sysctl's proc_handler 2024-12-05 14:02:46 +01:00
tty_ioctl.c tty: allow TIOCSLCKTRMIOS with CAP_CHECKPOINT_RESTORE 2023-12-15 14:20:03 +01:00
tty_jobctrl.c tty: tty_jobctrl: fix pid memleak in disassociate_ctty() 2023-09-18 11:14:43 +02:00
tty_ldisc.c tty: add the option to have a tty reject a new ldisc 2024-05-04 18:45:11 +02:00
tty_ldsem.c tty/ldsem: Fix syntax errors in comments 2021-12-21 09:15:49 +01:00
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c tty: switch tty_port::xmit_* to u8 2023-12-08 12:02:37 +01:00
ttynull.c tty: add missing MODULE_DESCRIPTION() macros 2024-06-24 16:10:11 +02:00
vcc.c tty: vcc: Add check for kstrdup() in vcc_probe() 2023-09-18 11:14:42 +02:00